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whetham
  • Member for 12 years, 3 months
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8 votes
2 answers
288 views

Well-definedness of conormal sheaf

7 votes
2 answers
597 views

Confusion about Cech Cohomology

6 votes
2 answers
781 views

Ring of integers and unit group for local fields

5 votes
1 answer
521 views

Computing Hasse-Witt matrix of a hyperelliptic curve

5 votes
2 answers
563 views

An identity about the Dedekind $\eta$ function

5 votes
1 answer
2k views

Extending morphisms between varieties

4 votes
1 answer
338 views

Independent sums of independent random variables

4 votes
1 answer
258 views

Understanding sheaves on a $2$-element set

3 votes
1 answer
70 views

Isomorphism between subgroups

3 votes
4 answers
146 views

Help needed on a problem regarding diffcult manipulation of binomial coefficients

3 votes
1 answer
590 views

Quasifinite morphisms to a field are finite (Vakil)

2 votes
1 answer
115 views

Full and faithful functor from quasi-coherent $\mathcal{O}_S$-modules to $S$-vector bundles

2 votes
0 answers
580 views

Definition of scheme-theoretic multiplicity

1 vote
1 answer
267 views

Rings of regular functions

1 vote
1 answer
188 views

Serre's definition of a sheaf in FAC

1 vote
0 answers
366 views

Inequality that may use Simon's Favorite Factoring Trick

1 vote
0 answers
127 views

Time complexity of Jacobi sums

1 vote
0 answers
45 views

Exact sequence of module sheaves

0 votes
0 answers
146 views

Finding valuations/uniformizers for the branches of the blow up of a singular curve

0 votes
0 answers
201 views

Finding the normalization of $K[X,Y]/(Y^5-X^7-XY^5)$

0 votes
1 answer
152 views

Proof of Sheafification in Bosch

0 votes
1 answer
121 views

Dimension of cotangent space is at least 1